[cdgatti]

My E90 '08 328i (rwd) is non-sport, it has C4/C3 springs F/R. Does this seem odd? I thought the E90 used the C4 or D4 springs in the rear.

If I switch to oem sport would I use D4/D3?

[cdgatti]

Does anyone have the answer? Thanks.

[thegrinchboy]

Originally Posted by cdgatti

My E90 '08 328i (rwd) is non-sport, it has C4/C3 springs F/R. Does this seem odd? I thought the E90 used the C4 or D4 springs in the rear.

If I switch to oem sport would I use D4/D3?

Here are some threads about springs that I read up on.

http://www.e90post.com/forums/showthread.php?t=435450
http://www.e90post.com/forums/showthread.php?t=85206

I am swapping from Koni Yellow with Eibach Pro (installed last month) to ZSP springs, probably D6 Front and D4 Rear since I have a 6SP MT xDrive E90.

BTW, I will have D3 rear (from an 335is) coming my way which I am not using if you are interested.

[cdgatti]

thanks grinch, i read all that and by every account i thought i should have c4 in the front and i do , and c4 in the rear (sedan) but have c3 in the rear (coupe). I will get d4 for front but not sure between d3 and d4 for the rear.

[thegrinchboy]

Originally Posted by cdgatti

thanks grinch, i read all that and by every account i thought i should have c4 in the front and i do , and c4 in the rear (sedan) but have c3 in the rear (coupe). I will get d4 for front but not sure between d3 and d4 for the rear.

All depending on how low you want to go As you undoubtedly know, if you like your current height, then go with D3 in the rear. If you want to sit up higher than go with D4.